I've written a private post early in this year. I'm posting it here too so people can quote the content conveniently.
美國開國元勳之一 John Adams 格言：
John Adams, one of the Founding Fathers of the United States, used to say:
I must study politics and war, that our sons may have liberty to study mathematics and philosophy. Our sons ought to study mathematics and philosophy, geography, natural history and naval architecture, navigation, commerce and agriculture in order to give their children a right to study painting, poetry, music, architecture, statuary, tapestry and porcelain.
Personally, I would like to append some more words:
If their children forget about the politics and war we've learned, then the next generation will need to start over.
Some thoughts recently:
The open source utopian is the romance belongs to the art generation. However, the problems we are dealing with right now, belong to the war generation.
以上，寫給 五年前的自己 。
For the old version of me 5 years ago.